public static async Task OnCommandError(CommandErrorEventArgs e)
{
if (e.Command == null)
{
return;
}
if (e.Context.Guild == null || (e.Context.Channel.PermissionsFor(e.Context.Member) & Permissions.SendMessages) != 0)
{
switch (e.Exception)
{
case ArgumentException _:
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} Invalid input.");
return;
case ChecksFailedException checks:
switch (checks.FailedChecks.FirstOrDefault())
{
case RequirePermissionsAttribute attr:
string perms = null;
Stringify.RolePermissions(attr.Permissions).ForEach((x) => perms += $"- **{x}**\n");
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} The command \"`{e.Command.Name}`\" requires elevated permissions.", embed : new DiscordEmbedBuilder()
.WithDescription(perms)
.WithTitle("Required permissions")
.Build());
break;
case RequireDirectMessageAttribute _:
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} The command \"`{e.Command.Name}`\" is restricted to direct messages only.");
break;
case RequireGuildAttribute _:
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} The command \"`{e.Command.Name}`\" is restricted to servers only.");
break;
case RequireNsfwAttribute _:
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} The command \"`{e.Command.Name}`\" cannot be executed outside of a channel set as NSFW one.");
break;
case RequireRolesAttribute attr:
await e.Context.RespondAsync($"{Emojis.ErrorEmoji} The command \"`{e.Command.Name}`\" requires you to possess {(attr.RoleNames.Count == 1 ? "a " : "")}certain role{(attr.RoleNames.Count > 1 ? "s" : "")}: {attr.RoleNames.Aggregate((a, b) => a + ", " + b)}");
break;
default:
break;
}
return;
default:
break;
}
}
e.Context.Client.DebugLogger.LogMessage(LogLevel.Error, "Commands", $"The command \"{e.Command.Name}\" executed by the user {e.Context.User.Username}#{e.Context.User.Discriminator} (ID: {e.Context.User.Id}) in channel \"{e.Context.Channel.Id}\" encountered an error.", DateTime.Now, e.Exception);
if (e.Context.Guild == null || (e.Context.Channel.PermissionsFor(e.Context.Member) & Permissions.SendMessages) != 0)
{
await e.Context.RespondAsync("An error occurred.");
}
}
